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Analysis of Cognitive Radio for LTE and 5G Waveforms

Computer Systems Science & Engineering 2022年第12期43卷 1207-1217页

作者： Ramesh Ramamoorthy Himanshu Sharma A.Akilandeswari Nidhi Gour arun kumar Mehedi Masud Centre for Artificial Intelligence Chennai Institute of TechnologyChennaiIndia Department of Computer Science and Engineering JECRC UniversityJaipur303905India Institute of ECE Saveetha School of EngineeringChennaiIndia Department of Electronics and Communication Engineering JECRC UniversityJaipur303905India Department of Computer Science College of Computers and Information TechnologyTaif University11099Saudi Arabia

Spectrum sensing is one of the major concerns in reaching an efficientQuality of service (QOS) in the advanced mobile communication system. Theadvanced engineering sciences such as 5G, device 2 device communications(D2D), Internet of things (IoT), MIMO require a large spectrum for better *** frequency division multiplexing (OFDM) is not a choice in advancedradio due to the Cyclic Prefix (CP), wastage of the spectrum, and so on. Hence, itis important to explore the spectral efficient advanced waveform techniques andcombine a cognitive radio (CR) with the 5G waveform to sense the idle spectrum,which overcomes the spectrum issue. The demand for spectrum is ever increasing;however, spectrum is limited and is an acutely scarce resource. To alleviate theissue, techniques like Cognitive Radios (CR) have been devised. However, suchtechniques are non-standardized, and many variations of CR algorithms have beentried and tested. This paper details the several spectrum sensing methods tailoredfor CR. We explain the benefits, uniqueness, and drawbacks of the various techniques to provide a comprehensive review of the scene, including all recent andnovel techniques of CR. Finally, we provided experimental results for the performance of the CR for key 5G and beyond modulation techniques to elaborate thedependency of the CR techniques for CR applications and provide a competitivereview of their performance. Experiments show that the CR integrated withNOMA shows better performance as compared with existing techniques.

关键词： CR Energy detection FBMC NOMA OFDM

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Development and evaluation of robust tree biomass equations for rubber tree (Hevea brasiliensis) plantations in India

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Forest Ecosystems 2017年第3期4卷 241-250页

作者： Biplab Brahma Gudeta W.Sileshi arun Jyoti Nath Ashesh kumar Das Department of Ecology and Environmental Science Assam University

Background： In India, rubber（Hevea brasiliensis） plantations cover -0.8 million ha of land, emphasizing its significant role in the Earth＇s carbon dynamics. Therefore, it is important to estimate the biomass stocks of plantations precisely in the context of carbon management. Previous studies in India have focused on development of allometric equations for estimating aboveground biomass（AGB） through harvesting younger trees（up to 14 yr）only or on studies with small sample sizes without assessing model bias. The objective of this study was to develop biomass estimation models for different tree components in rubber plantations and assess model predictive performance at the stand ***： A total of 67 trees were harvested from plantations of different ages（6, 15, 27 and 34 yr） in North East India and their diameter at 200 cm（D）, height and dry weights of different tree components were recorded. The data were used for evaluation of H-D and biomass estimation models at the stand ***： The Michaelis-Menten function was found to be the most appropriate model for estimating tree height among 10 commonly used H-D models. For estimation of AGB and coarse root biomass, a model that involves tree volume（i.e. D2 H） was found to provide better prediction than either D or H alone or a model that combines H, D and stand density. The estimated AGB varied from 28 Mg·ha-（-1） in 6 yr. old plantation to 169 Mg·ha-（-1） in 34 yr. old *** coarse root biomass was estimated at 4 Mg·ha-（-1） for 6 yr. old plantation and 12 Mg·ha-（-1） for 34 yr. old ***： It is concluded that models involving tree volume are more appropriate for regional level biomass estimation than simple power-law models for individual stands. We recommend that the power-law model should not be used for estimation of AGB in plantations at different growth stages because power-law parameters can be biased due to data truncation.

关键词： Aboveground biomass Data truncation Michaelis-Menten function Power-law

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Are Environmental Vanguard Firms More Proactive Towards Environmental Conservation?An Empirical Study of Power Sector Firms in India

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Journal of Environmental & Earth Sciences 2019年第2期1卷 31-41页

作者： arun kumar Vishwakarma Arvind K Nema National Institute of Industrial Engineering MumbaiIndia Indian Institute of Technology Delhi New DelhiIndia

Environmental protection is a crucial issue for environmentalists and *** every stakeholder in the industrial production process of a product is concerned about the detrimental effects on the environment due to *** environmental regulations are in place,some firms across diverse industrial sectors are considered as the environmental vanguard,i.e.,leaders in environmental *** being environmental vanguard result in environmental proactivity?This paper,through an empirical study of Indian power sector firms,studies the environmental proactivity of the firms who are known to be leaders in the adoption of environmental protection norms.A questionnaire-based survey method is used to analyse the responses *** study uses 280 responses for the analysis of the *** hypotheses are proposed and tested statistically through Structural Equation Modelling(SEM).The statistical analysis reveals that the firms who are environmental vanguard are more proactive towards environmental *** findings of the study can be useful for the policymakers and environmental managers in the formulation of policies which can be considered as a benchmark for the firms for the protection of the environment.

关键词： Proactive environmental strategies Environmental vanguard Statistical analysis Power sector Structural equation modelling

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A PSO based Energy Efficient Coverage Control Algorithm for Wireless Sensor Networks

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Computers, Materials & Continua 2018年第9期56卷 433-446页

作者： Jin Wang Chunwei Ju Yu Gao arun kumar Sangaiah Gwang-jun Kim School of Computer&Communication Engineering Changsha University of Science&TechnologyChangsha410114China School of Information Engineering Yangzhou UniversityYangzhou225009China School of Computing Science and Engineering Vellore Institute of TechnologyVellore632014India Department of Computer Engineering Chonnam National UniversityGwangju61186Korea

Wireless Sensor Networks(WSNs)are large-scale and high-density networks that typically have coverage area *** addition,a random deployment of sensor nodes cannot fully guarantee coverage of the sensing area,which leads to coverage holes in ***,coverage control plays an important role in *** alleviate unnecessary energy wastage and improve network performance,we consider both energy efficiency and coverage rate for *** this paper,we present a novel coverage control algorithm based on Particle Swarm Optimization(PSO).Firstly,the sensor nodes are randomly deployed in a target area and remain static after ***,the whole network is partitioned into grids,and we calculate each grid’s coverage rate and energy ***,each sensor nodes’sensing radius is adjusted according to the coverage rate and energy consumption of each *** results show that our algorithm can effectively improve coverage rate and reduce energy consumption.

关键词： Particle swarm optimization coverage control energy efficiency wireless sensor networks

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Comparative Analysis of Execution of CNN-Based Sanguine Data Transmission with LSB-SS and PVD-SS

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Computer Systems Science & Engineering 2023年第8期46卷 1707-1721页

作者： Alaknanda S.Patil G.Sundari arun kumar Sivaraman Department of Electronics and Communication Sathyabama Institute of Science and TechnologyChennaiTamil Nadu600119India School of Computer Science and Engineering Vellore Institute of TechnologyChennai600127India

The intact data transmission to the authentic user is becoming crucial at every moment in the current ***;is a technique for concealing the hidden message in any cover media such as image,video;and audio to increase the protection of *** resilience and imperceptibility are improved by choosing an appropriate embedding *** paper gives a novel system to immerse the secret information in different videos with different *** audio and video steganography with novel amalgamations are implemented to immerse the confidential auditory information and the authentic user’s face image.A hidden message is first included in the audio from the multimedia file;using LSB *** Stego-video is created in the second stage by merging the authorized user’s face into the frame of the video;by using PVD ***-audio is linked again with the stego-video in the third *** incorporated perspective techniques(LSB-SS and PVD-SS algorithms)with more significant data immersing capacity,good robustness and imperceptibility are proposed in this research *** spread spectrum approach is used to increase the complexity of secret data *** different video files are tested with different voice files with the results such as PSNR,SSIM,RMSE and MSE as 52.3,0.9963,0.0024 and 0.0000059,respectively.

关键词： Audio steganography data hiding information security pixel value differencing

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Effect of Inclined Tension Crack on Rock Slope Stability by SSR Technique

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Intelligent Automation & Soft Computing 2023年第4期36卷 1205-1214页

作者： Ch.Venkat Ramana Niranjan Ramchandra Thote arun kumar Singh Visvesvaraya National Institute of Technology Nagpur440010India

The tension cracks and joints in rock or soil slopes affect their failure *** of rock or soil slope failure is one of the most challenging tasks in the earth *** actual slopes consist of inhomogeneous materials,complex morphology,and erratic *** studies concerning the failure of rock slopes primarily focused on determining Factor of Safety(FoS)and Critical Slip Surface(CSS).In this article,the effect of inclined tension crack on a rock slope failure is studied numerically with Shear Strength Reduction Factor(SRF)*** inclined Tension Crack(TC)inﬂuences the magnitude and location of the rock slope’s Critical Shear Strength Reduction Factor(CSRF).Certainly,inclined cracks are more prone to cause the failure of the slope than the vertical ***,all tension cracks do not lead to failure of the slope *** effect of the crest distance of the tension crack is also *** numerical results do not show any signiﬁcant change in the magnitude of CSRF unless the tip of the TC is very near to the crest of the *** is also replaced with a joint,and the results differ from the corresponding *** results are discussed regarding shear stress and Critical Slip Surface(CSS).

关键词： Crest distance critical shear strength reduction factor critical slip surface inclined tension crack joint

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Phacoemulsification in a rare case of keratoconus with Fuch's endothelial corneal dystrophy

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International Journal of Ophthalmology(English edition) 2015年第6期8卷 1253-1254页

作者： Jaya Kaushik arun kumar Jain Vaibhav kumar Jain Partha Chakma Advanced Eye Centre Post Graduate Institute of Medical Education and Research Department of Ophthalmology Uttar Pradesh Rural Institute of Medical Sciences & Research

Dear Sir,Iam *** Kaushik from the Department of Ophthalmology of the Post Graduate Institute of Medical Education and Research,Chandigarh,India.I write to present a case report of phacoemulsification in a rare case of... 详细信息

关键词： case Phacoemulsification in a rare case of keratoconus with Fuch’s endothelial corneal dystrophy

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Advancements in non-starch polysaccharides research for frozen foods and microencapsulation of probiotics

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Frontiers of Chemical Science and Engineering 2009年第4期3卷 413-426页

作者： Pavan kumar soma Patrick D.WILLIAMS Y.Martin LO Department of Nutrition and Food Science University of MarylandCollege ParkMD 20742USA

Conventionally used in the food industry as stabilizing,thickening,gelling,and suspending or dispersing agents,non-starch polysaccharides such as xanthan gum are known to improve the texture of certain frozen *** polysaccharide that has received significant attention in recent years is chitosan,a natural biopolymer derived from *** the wake of growing interest in finding ideal encapsulating agents for probiotics,non-starch polysaccharides have been *** research can be found on the effect of each individual polysaccharide,but there remains a void in the literature in terms of closely comparing the characteristics of nonstarch polysaccharides for these applications,especially when more than one biopolymer is employed.A good understanding of the tools capable of elucidating the underlying mechanisms involved is essential in ushering further development of their ***,it is this review’s intention to focus on the selection criteria of non-starch polysaccharides based on their rheological properties,resistance to harsh conditions,and ability to improve sensory quality.A variety of critical tools is also carefully examined with respect to the attainable information crucial to frozen food and microencapsulation applications.

关键词： microencapsulation xanthan galactomannan chitosan curdlan

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Small Object Detection via Precise Region-Based Fully Convolutional Networks

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Computers, Materials & Continua 2021年第11期69卷 1503-1517页

作者： Dengyong Zhang Jiawei Hu Feng Li Xiangling Ding arun kumar Sangaiah Victor SSheng Hunan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation Changsha University of Science and TechnologyChangsha410114China School of Computer and Communication Engineering Changsha University of Science and TechnologyChangsha410114China School of Computer Science and Engineering Hunan University of Science and TechnologyXiangtan411004China School of Computing Science and Engineering Vellore Institute of Technology(VIT)Vellore632014India Department of Computer Science Texas Tech UniversityLubbock79409TXUSA

In the past several years,remarkable achievements have been made in the field of object *** performance is generally improving,the accuracy of small object detection remains low compared with that of large object *** addition,localization misalignment issues are common for small objects,as seen in GoogLeNets and residual networks(ResNets).To address this problem,we propose an improved region-based fully convolutional network(R-FCN).The presented technique improves detection accuracy and eliminates localization misalignment by replacing positionsensitive region of interest(PS-RoI)pooling with position-sensitive precise region of interest(PS-Pr-RoI)pooling,which avoids coordinate quantization and directly calculates two-order integrals for position-sensitive score maps,thus preventing a loss of spatial precision.A validation experiment was conducted in which the Microsoft common objects in context(MS COCO)training dataset was *** showed an accuracy improvement of 3.7%for object detection tasks and an increase of 6.0%for small objects.

关键词： Small object detection precise R-FCN PS-Pr-RoI pooling two-stage detector

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An Efficient Hybrid PAPR Reduction for 5G NOMA-FBMC Waveforms

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Computers, Materials & Continua 2021年第12期69卷 2967-2981页

作者： arun kumar Sivabalan Ambigapathy Mehedi Masud Emad Sami Jaha Sumit Chakravarty Kanchan Sengar Department of Electronics and Communication Engineering JECRC UniversityJaipur303905India Center for System Design Chennai Institute of TechnologyIndia Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Department of Computer Science Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddahSaudi Arabia Department of Electrical and Computer Engineering Kennesaw State UniversityGAUSA

The article introduces Non-Orthogonal Multiple Access(NOMA)and Filter Bank Multicarrier(FBMC),known as hybrid waveform(NOMAFBMC),as two of the most deserving contenders for fifth-generation(5G)*** spectrum access and clampdown of spectrum outflow are unique characteristics of hybrid *** compare the spectral efficiency of Orthogonal Frequency Division Multiplexing(OFDM),FBMC,NOMA,and *** is seen that the hybrid waveform outperforms the existing *** to Average Power Ratio(PAPR)is regarded as a significant issue in multicarrier *** combination of Selective Mapping-Partial Transmit Sequence(SLM-PTS)is an effective way to minimize large peak power *** SLM,PTS,and SLM-PTS procedures are applied to the NOMA-FBMC *** hybrid structure is applied to the existing ***,the correlated factors like Bit Error Rate(BER)and Computational Overhead(CO)are studied and computed for these *** outcome of the work reveals that the NOMA-FBMC waveform coupled with the SLM-PTS algorithm offers superior performance as compared to the prevailing systems.

关键词： 5G NOMA-FBMC SLM-PTS PAPR BER OFDM

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